| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 07/18/2012 | CN202338300U 胶筒自行回缩解封井下节流器 Cones self-retracting unseal downhole choke |
| 07/18/2012 | CN202338299U 防砂滤芯结构井下节流器 The sand filter structure downhole choke |
| 07/18/2012 | CN202338298U 钢条螺旋带支架滤砂管装置 Steel spiral tube device with stand filter sand |
| 07/18/2012 | CN202338297U 一种高渗透防堵塞滤砂管 A high-penetration anti-clogging filter sand tube |
| 07/18/2012 | CN202338296U 煤层气井内置筛管 CBM wells built-screen |
| 07/18/2012 | CN202338295U 抽油机调平衡工具 Pumping tune Balancing Tools |
| 07/18/2012 | CN202338294U 自喷与机采一体化智能完井管柱 From the spray and apheresis integrated intelligent completion string |
| 07/18/2012 | CN202338293U 可弯曲气井排水采气柱塞 Bendable drainage gas wells plunger |
| 07/18/2012 | CN202338292U 枯竭式油气藏地下储气库注采管柱 Depletion of underground gas storage reservoir-type injection and production strings |
| 07/18/2012 | CN202338291U 抽油机防曲柄销断脱装置 Anti-pumping crank pin breaking off device |
| 07/18/2012 | CN202338290U 带双封气举完井一体化管柱 With double sealing gas lift completion integration string |
| 07/18/2012 | CN202338289U Bidirectional wind resistance device for belt of walking-beam-free oil pumping unit |
| 07/18/2012 | CN202338288U 抽油机井毛辫子提升工具 Pumping wells hair braids upgrade tool |
| 07/18/2012 | CN202338279U 一种可变径压裂阀 One kind of fracture can be adjustable valve |
| 07/18/2012 | CN202338228U 双固定卡瓦悬绳器 Dual fixed rope hanging kava |
| 07/18/2012 | CN102597421A Fracture monitoring |
| 07/18/2012 | CN102597418A Low emission power generation and hydrocarbon recovery systems and methods |
| 07/18/2012 | CN102597417A Integrated enhanced oil recovery process |
| 07/18/2012 | CN102597416A Hydrocarbon recovery operations fluids and methods for using the same |
| 07/18/2012 | CN102590451A Flexible loading water sac system of three-dimensional simulation experiment table |
| 07/18/2012 | CN102587895A Methods and compositions for determination of fracture geometry in subterranean formations |
| 07/18/2012 | CN102587888A Method for determining migration velocity of displacement front in CO2 miscible displacement physical simulation |
| 07/18/2012 | CN102587886A Testing device and testing method for flow conductivity of acid-eroded fractures |
| 07/18/2012 | CN102587884A Utilizing process for underground gasified gas condensate |
| 07/18/2012 | CN102587883A Method for quenching underground coal gasifier |
| 07/18/2012 | CN102587882A Recoverable once pipe column fracture-acidizing well completion process and tool thereof |
| 07/18/2012 | CN102587881A Shellless fracturing bomb and burning speed control method thereof |
| 07/18/2012 | CN102587880A Oil extraction method |
| 07/18/2012 | CN102587879A Oil production method using steam power to lift thick oil |
| 07/18/2012 | CN102587878A Multi-element thermal fluid auxiliary gravitational displacement process |
| 07/18/2012 | CN102587877A Multi-element thermal fluid displacement process |
| 07/18/2012 | CN102587876A Method for improving recovery ratio of oil field by use of blasting type pre-crosslinking gel particles |
| 07/18/2012 | CN102587875A Method for improving output of crude oil by utilizing synergistic effect of combined bacteria liquid containing phosphate-solubilizing microorganisms and nitrogen-fixing bacteria |
| 07/18/2012 | CN102587874A Experimental device and experimental method for hydrothermal catalytic pyrolysis in heavy oil layer by means of ultrasonic wave |
| 07/18/2012 | CN102587873A Carbon oxide huff-n-puff, water control and oil increment method for horizontal well |
| 07/18/2012 | CN102587872A Secondary balanced energy-saving double-stroke flexible pumping unit |
| 07/18/2012 | CN102587871A Full balanced energy saver for beam-pumping unit |
| 07/18/2012 | CN102587870A Energy-saving pumping unit with miniaturized hydraulic system |
| 07/18/2012 | CN102587869A Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer |
| 07/18/2012 | CN102587868A Single-derrick tower-type twin-well pumping unit |
| 07/18/2012 | CN102587867A Tower type oil pumping unit |
| 07/18/2012 | CN102587866A Long-stoke chained oil pumping unit |
| 07/18/2012 | CN102587865A Foam drainage gas recovery method for natural gas horizontal well |
| 07/18/2012 | CN102587864A Fluid guiding device for vortex fluid-discharge gas production downhole tool |
| 07/18/2012 | CN102586785A System and method for cathodic protection of a subsea well-assembly |
| 07/18/2012 | CN102585795A Viscoelastic fluid, preparing method thereof and method for processing underground stratum |
| 07/18/2012 | CN101718192B Method for carrying out tertiary oil production on oil field |
| 07/18/2012 | CN101701515B Rodless oil extraction system driven by underground rotation motor |
| 07/18/2012 | CN101608118B Inhibitor for preventing the formation of natural gas hydrates of high-sulfur acid gas fields |
| 07/18/2012 | CN101581207B Electric water distribution measurement and adjustment instrument of single-layer shunt detection |
| 07/18/2012 | CN101440702B Sieve tube well completion method under insufficient balance condition and temporary blocking type sieve tube |
| 07/18/2012 | CN101392633B Mechanical and hydraulic double-acting expansion sieve tube hanger |
| 07/18/2012 | CN101360884B Methods of stabilizing unconsolidated subterranean formations |
| 07/18/2012 | CN101287529B 水力旋流器 Hydrocyclone |
| 07/17/2012 | US8224164 Insulated conductor temperature limited heaters |
| 07/17/2012 | US8224163 Variable frequency temperature limited heaters |
| 07/17/2012 | US8222455 Polycationic viscoelastic compositions |
| 07/17/2012 | US8220553 Subsea grease system and method of operating said system |
| 07/17/2012 | US8220552 Method of inhibiting hydrate formation |
| 07/17/2012 | US8220551 Subsea toroidal water separator |
| 07/17/2012 | US8220547 Method and apparatus for multilateral multistage stimulation of a well |
| 07/17/2012 | US8220546 Methods for gas well treatment |
| 07/17/2012 | US8220544 Cementing with electric line coiled tubing |
| 07/17/2012 | US8220543 Method and system for treating a subterranean formation using diversion |
| 07/17/2012 | US8220542 System and method for facilitating downhole operations |
| 07/17/2012 | US8220539 Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation |
| 07/17/2012 | US8220535 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 07/17/2012 | US8220394 Oil well perforators |
| 07/17/2012 | CA2669749C Nano-sized particles for stabilizing viscoelastic surfactant fluids |
| 07/17/2012 | CA2666639C A 3-pillar pumping unit driven by compound permanent-magnet motor & its fabrication method |
| 07/17/2012 | CA2666211C A clearance method and device for the oil pumping unit driven by compound permanent magnet motor |
| 07/17/2012 | CA2602655C Well productivity enhancement method (options) |
| 07/17/2012 | CA2598345C Arrangement related to a separator for the cleaning of such separator |
| 07/17/2012 | CA2563525C Inhibiting effects of sloughing in wellbores |
| 07/17/2012 | CA2555717C Method for operating an actuator and an actuator device for use in drainage pipe used for producing oil and/or gas |
| 07/14/2012 | CA2764306A1 Methods of treating a subterranean formation containing hydrocarbons |
| 07/13/2012 | CA2762521A1 Chemomechanical treatment fluids ands methods of use |
| 07/12/2012 | WO2012094314A2 Method and apparatus for dissimilar metal completion system |
| 07/12/2012 | WO2012094134A1 Fracture detection via self-potential methods with an electrically reactive proppant |
| 07/12/2012 | WO2012093264A1 Gas stream production |
| 07/12/2012 | WO2012092657A1 Well tool with shearable collet |
| 07/12/2012 | WO2012068330A3 Foamers for downhole injection |
| 07/12/2012 | WO2012061364A3 Prevention of biomass aggregation at injection wells |
| 07/12/2012 | WO2012058288A3 Downhole multiple well |
| 07/12/2012 | US20120175136 Method for capturing co2 produced by cement plants by using the calcium cycle |
| 07/12/2012 | US20120175132 Low Equivalent Circulation Density Setting Tool |
| 07/12/2012 | US20120175131 ID Centralizer |
| 07/12/2012 | US20120175128 Method and apparatus for dissimilar metal completion system |
| 07/12/2012 | US20120175127 Dense Slurry Production Methods and Systems |
| 07/12/2012 | US20120175125 Subsea pod pump |
| 07/12/2012 | US20120175121 Method for Increasing Productivity of Hydraulically Fractured Wells |
| 07/12/2012 | US20120175120 Method for intervention operations in subsurface hydrocarbon formations |
| 07/12/2012 | US20120175114 In-situ kerogen conversion and product isolation |
| 07/12/2012 | US20120175112 Gravel packing in lateral wellbore |
| 07/12/2012 | US20120175111 Fish-Thru Screen Apparatus and Method |
| 07/12/2012 | US20120175110 In situ combustion in gas over bitumen formations |
| 07/12/2012 | US20120175109 Non-intrusive flow indicator |
| 07/12/2012 | US20120175107 Method and apparatus for producing shock waves in the borehole of wells filled by liquid |
| 07/12/2012 | US20120175106 Drilling Fluid Diverting Sub |
| 07/12/2012 | US20120175105 System and method for anchoring an expandable tubular to a borehole wall |